Home / 643,815,234.40-965,722,851.60-512,301,301.60

Finding the Fourth Proportional to 643,815,234.40, 965,722,851.60 and 512,301,301.60

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Solution

The fourth proportional to 643,815,234.40, 965,722,851.60 and 512,301,301.60 is: 768,451,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,815,234.40 : 965,722,851.60 = 512,301,301.60 : x
  2. Step 2: Convert to fraction form
    643,815,234.40/965,722,851.60 = 512,301,301.60/x
  3. Step 3: Cross multiply
    643,815,234.40x = 965,722,851.60 × 512,301,301.60
  4. Step 4: Simplify right side
    643,815,234.40x = 494,741,073,859,543,680
  5. Step 5: Solve for x
    x = 494,741,073,859,543,680/643,815,234.40
  6. Step 6: Final answer
    x = 768,451,952.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.